Quick battery charging and replacing station for electric automobile

Abstract

The invention relates to the technology of electric energy supplementing systems of electric automobiles, in particular to a quick battery charging and replacing station for an electric automobile. The station comprises a frame, a battery box internally provided with a plurality of power batteries and a charging device arranged on the frame and used for charging the power batteries. When the battery box provides electric energy for the electric automobile, a series-connection circuit movable board is driven by a first driving device, a battery series-connection block is connected with a binding post, and the power batteries are connected in series to supply power. When the battery box is in the charging state, the first driving device drives the series-connection circuit movable board to be far away from the binding post, the battery series-connection block is separated from the binding post, the power batteries are not connected, and the charging device charges the corresponding power batteries independently. The battery charging and replacing station is convenient, quick and accurate to operate when the battery box of the electric automobile is replaced. A battery management system is not required in the charging process, independent charging of each power battery can be achieved, each power battery can be fully charged simply and quickly, and the balance efficiency is high.

Description

Technical field [0001] The invention relates to the technology of an electric energy supply system for electric vehicles, in particular to a fast charging and changing station for electric vehicles. Background technique [0002] Electric vehicles use energy storage batteries as their power source, and are high-tech products involving multiple disciplines such as machinery, electronics, electricity, and microcomputer control. It is a "zero-emission" vehicle, which is the most ideal and promising green vehicle to replace fuel vehicles. At present, the main power supply methods for electric vehicles are: slow charging or fast charging of the battery in the battery box. Because these two methods are connected in series, the charging management system controls constant current and constant voltage charging. Mode is used for uniform and constant charging of the battery. Because the batteries are always charged in series, no matter what scheme of charging management system is adopted, ...

AI Technical Summary

Problems solved by technology

At present, the main power supply methods of electric vehicles are: slow charging or fast charging of the batteries in the battery box. Since these two methods are to connect the batteries in series, the charging management system controls constant current and constant voltage charging. mode to carry out the uniform charging of the battery. Since the battery is always charged in series, no matter what kind of charging management system is adopted, it is impossible to separately supplement the battery with low power. The battery is constant and the maintenance effect is not satisfactory.

In addition, both methods have disadvantages

[0003] If the slow charging method is used, the charging time will be longer, which is not suitable for long-term continuous driving; the current fast charging method is to charge the power batteries in series, which will cause a certain loss to the power battery and shorten the power battery life. The service life of this kind of fast charging method is generally equipped with an on-board charger, which requires parking spaces. Compared with foreign countries, the parking spaces in my country are relatively tight. Poor management will affect the stable operation of the power grid

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